Nock point square



Nov. 26, 1963 T. J. HARTOG NOCK POINT SQUARE Filed April 17, 1962 2 Sheets-Sheet 1 INVENTOR. THOMAS J HARTOG BY Nov. 26, 1963 T. J. HARTOG 3,111,772

NOCK POINT SQUARE Filed April 17, 1962 2 Sheets-Sheet 2 INVENTOR. 3e 33 2a 34 06 F165 ;;HOMASJ HART M QW United States Patent 3,111,772 NOCK POINT SQUARE Thomas J. Hartog, Ogden, Utah, assignor to Browning Industries, 1110., Ogden, Utah Filed Apr. 17, 1962, Ser. No. 188,075 Claims. (Cl. 33180) This invention relates to archery bows and is more particularly directed to a nock point square for locating the position of the nock points on a bow string of an archery bow.

It is well known that in order to consistently shoot a bow at the greatest degree of accuracy, the arrow must be held against the same place on the bow string for each shot. This place on the bow string at which the archer places his arrow in preparation to shooting the arrow is known as nock points. Nock points once located are usually made by wrapping a very short area on the serving with thread and coating the thread with a clear cement. The end of the arrow, known as the nock, is held between these two marks or against one mark, if only one nock point is used.

The location of these nock points by most archers is effected by a trial and error method, while others use complicated and awkward methods of finding the nock points all of which methods are time consuming and the nock points inaccurately located. The present invention contemplates the use of a simple and relatively small device for conveniently and easily locating the nock points and a very quick method of applying the device to the bow for locating the nock points accurately.

Therefore, a principal object of the present invention is to provide a simple and inexpensive device for locating the nock points on a bow string quickly and accurately.

Another object of the present invention is to provide a device for locating the nock points on a bow string, which device is so small and compact that it may be readily carried in ones pocket and be available at all times.

Another object of the present invention is to provide a device for easily and conveniently locating the nock points on a bow stn'ng.

A still further object of the present invention is to provide an archer engaged in competitive archery a device for quickly checking the nock points on his bow string for any change or in the event the bow string breaks and has to be replaced, the nock points on the new string are headily located and marked.

With these and other objects in view, the invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawings forming a part of this specification, with the understanding, however, that the invention is not confined to any strict conformity with the showing of the drawing but may be changed or modified so long as such changes or modifications mark no material departure from the salient features of theinvention as expressed in the appended claims.

In the drawings:

FIGURE 1 is a side elevational view of a conventional archers bow with my nock point square fastened to an arrow and positioned on the bow string for locating the nock point.

FIGURE 2 is a fragmentary and enlarged view of that shown by FIGURE 1.

FIGURE 3 is a perspective view of my nock point square.

FIGURE 4 is a cross sectional view taken along the line 4-4 of FIGURE 2.

FIGURES 5, 6 and 7 are top plan, side and front elevational views of that shown by FIGURE 4.

FIGURE 8 is a bottom plan view partially broken away of my nock point square.

3,111,772 Patented Nov. 26, 1963 Referring to the drawings wherein like numerals are used to designate similar parts throughout the several views, the numeral 10 refers to my nock point square device shown positioned on a bow string 11 of an archery bow 12 for the purpose of locating on the bow string 11, the proper position of the nock point as marked or indicated by a wrapping 13' on the serving with thread and coating it with a clear cement. An arrow 20 is used in connection with the nock point square 10 for alignment with an arrow rest 15 on the how 12 in the locating of the nock point as is explained in detail hereinafter.

My nock point square 10 consists of a frame of a generally L-shaped construction having a body portion 16 and a leg portion 17. Extending longitudinally along the body portion 16 there is a V-shaped slot 18 extending on the rear surface of the device 10 for receiving the shaft of an arrow 20. The V-shape of the slot 18 aligns the center of the shafts 2i? no matter what their diameters may be. The arrow shaft 20 is held securely in position in the V-shaped slot 18 by the head 21 of a thumb screw 22 threadedly mounted in a bore formed in the body portion 16 of the device .10. The thumb screw 22 is of sufiicient length to permit the V-shaped slot 18 to receive and the head '21 to engage the arrow shaft 20 snugly yet securely against movement.

A second V-shaped slot 23 extends across a bottom edge 24 of the device 10 for receiving the bow string 11. The bot-tom edge 24 is slotted as at 25 forming shortened legs 26 and 27 which support the device 10 on the bow string 11 as best shown by FIGURE 5. At the midportion of the slot 25 in axial alignment with the V-shaped slot 18 is a pointer or indicator 28 which when the device 10 is properly positioned will indicate the exact center position of the nock point. However, since many archers prefer to use a nock point a certain distance from this exact central position, a second adjustable pointer device 36 is provided.

The leg portion 17 of the device 10 is of less thickness than the body member 16 and therefore stepped down to form a ledge portion 31. A flat slot 32 is cut across the body portion 16 of the device 18 in alignment with the top surface of the leg portion 17 for receiving the adjustable indicator device. The indicator device 30 consists of a flat body member 33 with a pointer 34 mounted along the edge at one end thereof. The body member is slotted as at 35 for receiving a bolt 36 which is threadedly mounted in a bore 37 in the leg portion 17 of the device 10. The function of the bolt 36 is to permit the adjustment of the position of the pointer 34 and to secure it into place after the pointer 34 has been placed as desired.

As can be readily noted from the drawings along with the above discussion my nock square 10 is small and compact in size, simple in construction and extremely convenient in its use to effect an accurate location of the nock points. In the normal use of the nock point square, an archer must first adjust the position of pointer 34 if he wishes to have his nock point or points a set distance from the exact center of the bow string 11. This is done simply by loosening the bolt 36 and sliding the indicator device 30 in the slot 32 until the pointer 28 is the desired distance from the fixed pointer or indicator 28. The bolt 36 is then tightened against the pointer device 30.

The head 21 of the bolt 22 is then unthreaded to permit an arrow 20 to be placed in the V-shaped groove 18. Approximately two-thirds of the length of the forward end of the arrow should be positioned below the device It as shown by FIGURE 1. The thumb screw 21 is then tightened against the shaft 20 of the arrow to hold it securely in position in the groove 18.

Now the archer holds the archery bow in one hand in a vertical plane parallel with the front of his body with the bow string 11 in the horizontal plane. My nock point square with the arrow 26 attached thereto as described above is placed on the bow string 11 with the slot 23 receiving the bow string 11. The device it} does not have to be held in position, but rather will remain on the bow string 11 in a straddling relationship therewith while the arrow 20 will extend downwardly beyond the bow 12 in slight contact relation thereto. The nock point square 10 is then slid along the bow string 11 with a light pressure of the archers finger until the arrow shaft 20 contacts the arrow rest 15 on the bow 12. Then a mark is made or otherwise indicated on the bow string 11 at the adjustable indicator 34 or at the center indicator 28. The nock point square ltl is removed from the bow string 11 and the arrow separated from the nock point square 19 by merely loosening the thumb screw 22. The small size of my device 10 permits pocketing the device 10 when finished with it.

The archer has now marked his bow string 11 so that he can now wrap thread thereon to mark the point or points thereon. The thread is coated with a clear cement to prevent fraying or disarraying the thread so as to cause same to move or be dislodged from its proper position on the bow string 11. In competitive archery when time is of the essence, with the use of my nock point square, the nocks points already marked on the archers bow string can be checked very quickly and accurately. If the nock point or points have moved, he can quickly ascertain his correction at a glance and thereafter apply that correction during the shooting competition until such time as he can again use my nock point square 10 to determine the accurate position of the nock points and mark them properly.

Having disclosed my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A nock point square for archery bows comprising body means, said body means having a groove substantially longitudinally disposed thereon for receiving a shaft of a bow, removable fastening means mounted on said body means for securing said shaft to said body means, said body means having a second groove along a bottom edge extending transversely to said first named groove for receiving a bow string and resting said nock point square on said bow string, said bottom edge portion having a cut out portion intermediate its end portions forming a slot spanning said first named groove and indicator means mounted on said body means in alignment with said first named groove and extending across said out out portion.

2. A nock point square for archery bows comprising body means, said body means having a groove substantially longitudinally disposed thereon for receiving a shaft of a bow, removable fastening means mounted on said body means for securing said shaft to said body means, said body means having a second groove along a bottom edge extending transversely to said first named groove for receiving a bow string and resting said nock point square on said bow string, said bottom edge portion having a cut out portion intermediate its end portions forming a slot spanning said first named groove, indicator means mounted on said body means in alignment with said first named groove and extending across said cut out portion and second indicator means slidably mounted on said body means for indicating desired distances from said centrally positioned first named indicator means,

3. A nook point square for archery bo-ws comprising a body member, a leg portion mounted on said body member and extending transversely thereto, said body member having a groove substantially longitudinally disposed thereon for receiving a shaft of a bow, adjustable fastening means mounted on said body member for removably securing said shaft to said body member, said leg portion having a second groove along a longitudinal edge for receiving a bow string and resting said nock point square on said bow string, said longitudinal edge of said leg portion having a cut out portion intermediate its end portions forming a slot spanning said first named groove, an indicator mounted on said longitudinal edge in align- :ment with said first named groove and extending across said out out portion for indicating the axis of said shaft of said bow.

4. A nock point square for archery bows comprising a body member, a leg portion mounted on said body member and extending transversely thereto, said body member having a groove substantially longitudinally disposed thereon for receiving a shaft of a bow, adjustable fastening means mounted on said body member for removably securing said shaft to said body member, said leg portion having a second groove along a longitudinal edge for receiving a bow string and resting said nock point square on said bow string, said longitudinal edge of said leg portion having a cut out portion intermediate its end portions forming a slot spanning said first named groove, an indicator mounted on said longitudinal edge in alignment with said first named groove and extending across said cut out portion for indicating the axis of said shaft of said bow, a second indicator, and means adjustably mounting said second indicator on said leg portion and along said out out portion for indicating desired distances from said first named indicator.

5. A nock point square for archery bows comprising a body member, a leg portion mounted on said body member and extending transversely of said body member, said body member having a V-shaped groove extending longitudinally for receiving the shaft of a bow, a threaded bore adjacent said V-shaped groove extending substantially transversely thereto, a threaded bolt mounted in said bore and having an enlarged head portion for engaging said shaft of said bow to rermovably secure said shaft in said groove, said leg portion having a second V-shaped groove along a longitudinal edge for receiving a bow string and resting said nock point square on said bow string, said longitudinal edge of said leg portion having a cut out portion intermediate its end portions forming a slot spanning said first named groove, an indicator mounted on said longitudinal edge in alignment with said first named groove and extending across said cut out portion, a second indicator mounted in said out out portion, a body portion secured to said second indicator and slidably mounted along said leg portion, said body portion having an elongated opening and a bolt threadedly mounted on said leg portion received by said elongated opening for adjustably positioning said second indicator with relation to said first indicator.

References Cited in the file of this patent UNITED STATES PATENTS 201,371 Walter Mar. 19, 1878 2,685,739 Cole Aug. 10, 1954 3,038,262 Fuehrer June 12, 1962 

1. A NOCK POINT SQUARE FOR ARCHERY BOWS COMPRISING BODY MEANS, SAID BODY MEANS HAVING A GROOVE SUBSTANTIALLY LONGITUDINALLY DISPOSED THEREON FOR RECEIVING A SHAFT OF A BOW, REMOVABLE FASTENING MEANS MOUNTED ON SAID BODY MEANS FOR SECURING SAID SHAFT TO SAID BODY MEANS, SAID BODY MEANS HAVING A SECOND GROOVE ALONG A BOTTOM EDGE EXTENDING TRANSVERSELY TO SAID FIRST NAMED GROOVE FOR RECEIVING A BOW STRING AND RESTING SAID NOCK POINT SQUARE ON SAID BOW STRING, SAID BOTTOM EDGE PORTION HAVING A CUT OUT PORTION INTERMEDIATE ITS END PORTIONS FORMING A SLOT SPANNING SAID FIRST NAMED GROOVE AND INDICATOR MEANS MOUNTED ON SAID BODY MEANS IN ALIGNMENT WITH SAID FIRST NAMED GROOVE AND EXTENDING ACROSS SAID CUT OUT PORTION. 